Matlab P-file for SFR calculation.zip (36.92 kB)
Matlab P-file for SFR calculation
software
posted on 2017-02-08, 18:33 authored by Zong Qin, Po-Jung Wong, Wei-Chung Chao, Fang-Cheng Lin, Yi-Pai Huang, Han-Ping Shieh, figshare admin OSAfigshare admin OSAAuthor: Zong QIN, Po-Jung WONG, et al., National Chiao Tung University, Taiwan, R.O.C.
Function name: Calc_SFR
Description: Calculate spatial frequency response based on a slanted-edge
Input argument: None
Output argument: An N by 2 matrix whose first and second column denotes spatial frequency in cycle/pixel and contrast ratio respectively
Output figure: see "Figures.bmp"
How to use: Once the function is called, a dialog box will be prompted for you to select an image file, and then a slanted-edge region (region of interest) needs to be cropped from the image interactively. This program is written for vertical slanted-edge, thus if a horizontal edge is to be investigated, it should be rotated for 90 degree in advance.
This function is compatible with Matlab r2015b or later version. Compatibility is not guaranteed for older version Matlab.